2010 Mack LEU Problems, Complaints & Recalls

Problem: Mack Trucks Inc. (Mack) is recalling certain model year 2014-2015 CXU, 2010-2015 LEU, and 2011-2015 MRU vehicles manufactured with certain Cummins Westport Model ISL G and ISX12 G engines. Condensation in the intake manifold may freeze during cold weather conditions and interfere with the proper operation of the intake manifold pressure sensor.

Risk: The improper operation of the sensor could induce elevated exhaust temperatures or flames from the exhaust pipe, increasing the risk of a vehicle fire or burn injury to a person near the exhaust pipe.

Fix: Cummins and Cummins Westport will notify owners, and authorized Cummins service facilities will upload a new ECM calibration, free of charge. The recall began on March 12, 2014. Customers may contact Mack at 1-336-393-2000 or Cummins Inc. at 1-800-343-7357. Mack's number for this recall is SC0377.

Problem: Mack Trucks, Inc. (Mack) is recalling certain model year 2010-2015 LEU vehicles manufactured May 14, 2009, through February 14, 2014, and equipped with a Cummins ISL engine. In the affected vehicles, the exhaust pipe may disconnect from the muffler/catalyst.

Risk: If the exhaust pipe separates from the muffler on a twin-steer configured vehicle where the vehicle is operated from the right side, the operator may be exposed to carbon monoxide levels which may cause personal injury.

Fix: Mack will notify owners. The recall began on April 21, 2014. The recall is expected to begin in late April 2014. Owners may contact Mack Trucks at 1-336-393-2000. Mack's number for this recall is SC0376.

Problem: Mack is recalling certain model year 2010-2012 leu and model year 2011-2012 mru vehicles, manufactured from may 14, 2009, through october 31, 2011, and built to operate on compressed natural gas. On these vehicles the alternator ground cable runs directly to the starter, which defeats the circuit protection.

Risk: In the event of an electrical short, a vehicle fire may result.

Fix: Mack will notify owners, and dealers will relocate the alternator ground cable to the engine ground stud. This service will be performed free of charge. The recall began on april 19, 2012. Owners may contact mack trucks at 1-800-866-1177.

Problem: Mack is recalling certain model year 2009-2011 mru and model year 2010-2011 leu vehicles, manufactured from january 1, 2009, through september 30, 2010 because the front axle may crack and fracture.

Risk: Complete fractures can cause the driver to lose control of the vehicle, increasing the risk of a crash.

Fix: Mack will notify owners, and replace the axle beams on affected vehicles when sufficient quantities are available. As an interim measure, a mag particle inspection will be provided to mitigate risk and identify vehicles with cracked axle beams. This service will be performed free of charge. The safety recall began march 30, 2012. Owners may contact mack trucks at 1-800-866-1177.

Problem: Mack trucks is recalling certain model year 2008-2012 mru and leu heavy trucks manufactured from january 3, 2007, through february 3, 2011. The electrical circuitry in these vehicles may not provide adequate overcurrent protection.

Risk: In the event of an electrical overage, the fuse that should prevent the over current from reaching the mirror switch circuit may fail, such that the mirror switch can overheat. An overheated switch could cause a vehicle fire.

Fix: Dealers will install a relay harness to prevent the mirror switch from overheating. They will also inspect the mirror switch and if signs of overheating are shown, replace that switch. All inspections and repairs will be performed free of charge. The safety recall began on june 30, 2011. Owners may contact mack trucks at 1-800-866-1177.

Problem: Mack trucks is recalling certain model year 2008-2010 trucks which fail to comply with the requirements of federal motor vehicle safety standard no. 121, "air brake systems."

Risk: Failure to conform to the requirements increases the application and release time of the service brakes, which could potentially result in a vehicle crash.

Fix: Dealers will rework the air system free of charge. The safety recall began o january 12, 2010. Owners may contact mack trucks at 1-800-528-6586.